topic Re: Why not h264 support on mobile phones? in Stadia on Chrome

Why not h264 support on mobile phones?

Awwe — Tue, 05 Jan 2021 16:01:04 GMT

This would have solved many problems when both xbox gamepass and geforce now works perfect and stadia does not. It is a small screen. Let the user decide. Make it a experimental feature!

Re: Why not h264 support on mobile phones?

JohnZoidberg — Tue, 05 Jan 2021 16:20:39 GMT

The key technology Stadia requires is support for streaming video over the QUIC protocol. It can carry either H.264 or VP9 over QUIC, depending on what the device supports. It just happens that mobile devices that support QUIC also tend to support VP9, which is a better codec than H.264. So, I'm not sure why anyone would want to use H.264 on a mobile device for Stadia.

Re: Why not h264 support on mobile phones?

Awwe — Tue, 05 Jan 2021 17:47:08 GMT

Is vp9 decoding more demanding than h264 i think you would choose h264 instead.

But i read somewhere that chrome on android via QUIC only optimize it for Exynos and qualcomm/snapdragon. Or something like that.

Re: Why not h264 support on mobile phones?

Awwe — Tue, 05 Jan 2021 17:49:22 GMT

For example like my mobile.

Vp9 1080p 60fps stutters.

H264 1080p 60fps works perfect on geforce now

I am restricted to 720p subpar stadia experience

Re: Why not h264 support on mobile phones?

Awwe — Tue, 05 Jan 2021 17:54:13 GMT

Then explaing why my kirin 710 processor stutters with 1080p 60fps vp9 decoding?

When!! The nord N100 is official supported and that snapdragon is slower than mine.

Both has vp9 support

Re: Why not h264 support on mobile phones?

JohnZoidberg — Tue, 05 Jan 2021 20:42:41 GMT

I can't explain why your phone is struggling to decode VP9. It may just not have a great implementation of that codec. VP9 uses less data, but is definitely more computationally intensive to decode than H.264 is. It's entirely possible no one has formally tested Stadia on that particular phone.